Nut making machine



March 7,1939; w. J. CARNEY. 2,149,578

NUT MAKING MACHINE Filecl Jan. 24, 1938 4 Sheets-Sheet l March 7, 1939. w. .JfcARNEY 2,149,578

NUT MAKING MACHINE Filed Jan. 24, 1938 4 Sheets-Sheet 2 March 7, 1939. w J. CARNEY NUT MAKING MACHINE File d Jan. 24, 1938 4 Sheets-Sheet 3 l 4 nd mw March 7, 1939.

r w. J. CARNEY NUT MAKING MACHINE Filed Jan. 24, 1938 4 Sheets-Sheet 4 X Patented Mar. 7, 19 39 UNITED STATES 2,149,578 4 nor MAKING mom winner J. Carney, Columbus, Ohio Application January 24. 1938, Serial No, 186,550

8 Claims.

This invention relates to improvements in machines for making nuts, and one of: the objects of the invention is to provide an improved, simple, compact and comparatively inexpensive machine of this character which will be effective and efficient in operation. Y

A further object is to provide an improved machine of this character in which the nuts may be formed from a strip of either cold or hot material cut into the desired length for the individual nuts, the severed-pieces being then fed into the machine and shaped into the desired configuration, thereby obviating the producing of scrap or waste material. 15 A further object is to provide in a machine of this character improved means whereby after the completion of the formation or shaping of the nut, it will be forced out of the shaping mechanism into a burnishing or finishing die or mech- 20 anism, thereby obviating the necessity of tumbling or otherwise finishing or polishing the surfaces of the nut. A 1

To the attainment of these ends and the accomplishment of other new andv useful objects as will appear, the invention consists in the features of novelty in substantially the construction, combination and arrangement of the several parts hereinafter more fully described and claimed and shown in the accompanying drawings illustrat- "ing this invention and in which Figure 1 is a top plan view of a machine of this character constructed in accordance with the principles of this invention.

Figure-2 is a view partly in sectionand partly in side elevation taken on line 2-2 Figure 1.

Figure 3 is a-detail vertical sectional view, with parts omitted and as taken on line 3--3 Figure 4.

Figure 4 is a View taken on line-4-4 Figure 3.

Figure 5'is a detail sectional view similar to Figure 3, with parts omitted and showing the parts in difierent positions. Y

Figure 6 is a detail sectional View taken on line 6-6 Figure '7 showing one of the dies and the manner of securing the same in position.

Figure 7 is a detail sectional view taken on line l--'|, Figure 6.

Figure 8 is a detail perspective view of the means for cutting and temporarily holding the material.

Figure 9 is a detail sectional View taken on line 9-9 Figure 2 on an enlarged scale.

Figure 10 illustrates diagrammatically the ious steps in the formation of the nut blank.

Referring more particularly to the drawings, the

var-

numeral l5 designates a suitable supporting base which may, if desired; be provided with legs l6 and carried by the base are opposed slides I! which are adapted to be, reciprocated in a suitable'houslng I8. 5

Shafts I 9, preferably crank shafts, are Journaled in the frame l5 preferably adjacent opposite ends thereof, and rods 20 are pivotally con-- nected by one end to the respective crank shafts and by their other ends as at 2|, to the respective 10 slides II, the shafts being rotated in any desired manner from any suitable source of power and being preferably connected to rotate in unison by means of intermeshing gears 22,0he of which is secured to each of the shafts I 9 for rotation therewith.

. Carried by the proximate faces of the slides l I are co-operating pairs of tools 23, one of the tools of each co operating pair being secured to each of the slides l1 and adapted to co-operate to form the nut therebetween, as the slides are reciprocated. I t

These tools may be of anydesired size, configuration and construction and any number of pairs may be employed to perform difierent and successive steps of operation upon the material to form the blank as the material is intermittently advanced into positions to be operated upon by the respective pairs of tools, and according to the work to be performed, in a manner to be described.

Disposed between the slides I1 is a die carrying member designated generally by the reference numeral 24, circular in configuration and may be of any desired thickness and diameter. The

peripheral edge of the die carrying member projects into channel members 25 to be thereby supported by its periphery and for free rotation, the axis thereof being horizontally disposed, the channel members being supported and secured in position in any suitable manner.

In this die carrying member there are provided die receiving openings 26, any number of which may be provided, according to the number of steps of operation it is desired to perform upon the material before the completion of the nut blank.

Within each of these openings 26 may be arranged suitably shaped dies 21 within which the material is shaped and these dies may be held in position with respect to the member 24 in any suitable manner, such as by means of keys 28 and fastening screws 29, the latter enabling the dies to be removed and replaced.

Adjacent certain of the dies 21 stripper plates 30 may be arranged for stripping the material from the tool at certain stages in the process of the manufacture of the blank.

In the periphery of the member 24 notches or recesses 3! may be provided and suitably arranged, preferably intermediate adjacent dies, and which notches serve as a means whereby the member 24 may be rotated and also as a means whereby the member may be locked against rotation all during predetermined periods in the.

cycle of operation of the machine.

Any suitable means maybe provided for rotating the member 24, a simple and efiicient means embodying a pawl 32, the hooked extremity 33 of which is adapted to enter a recess 3i. This pawl is pivotally connected at one end as at 34 to an arm 35 which in turn is connected to an oscillating shaft 36 journaled in suitable bearings 31 and carried by the shaft 36 is another arm 39 preferably carrying an antifriction roller 39, which latter engages a cam 49 secured to one of the shafts I9 so that when the shaft 49 is rotated an oscillatory movement will be imparted to the shaft 36, arm 35 and pawl 32. A suitable spring 4| may Be provided for holding the roller 39 against the cam 40 and for causing a return movement of the pawl 32 after the latter has imparted one step of rotation to the member 24.

' Locking means 42 slidable in suitable guides 43 may be provided and are so positioned that the extremities thereof will enter the notches or recess .3i in the member 24 to lock or retain the latter inposition.

Springs 44 may also be provided which tend normally to move the locking members 42 into active positions and to cause them to automatically enter these notches or recesses as they approach the locking members. This will lock the member 24 against movement during certain steps in the cycle of operation of the machine and also while the pawl 32 is returning to engage another one of the notches or recesses 3| to impart ,another step of advancing movement to the die carrying member 24.

Any suitable means may be provided for withdrawing or rendering inactive the locking means 42 and to that end a cam surface 45 may be provided On each of these members and with which cam surface another cam surface 46 provided on a slidable member 4'! co-operates. face is operating when the member 41 is moved in one direction to positively withdraw the locking members 42, these members 42 being returned into locking positions by means of the springs 44.

Any suitable means may be provided for reciprocating the members 41 and they are preferably moved in one direction by means of cams 49 secured to one of the shafts I 9 for rotation therewith.

Carried by each member 41 is an antifriction roller 50 which is held in contact with its respective cam 49 preferably by means of a spring 5|, one end of which is secured as at 52 to the member 41, and the other end is anchored as at 53 to a stationary part of the mechanism. Thus it will be seen that when the member 4'! is moved in one direction the cam or inclined surfaces 45-46 will co-operate to withdraw the member 42 against the stress of the spring 44. When the member 41 is returned by the spring 5| the spring 44 will move the locking members 42 into an active position.

The rotatable member 24 may be held in position in a sectional frame.

The grooved or channel member 25 for the The cam surrotatable member 24 may be of sectional structure as shown more clearly in Figure 4 so as to permit ready insertion and removal of the member 24 when desired. These sections may be held in position within a portion of the frame by means ofsuitable anchor or securing bolts 54, and portions of the sections 25 may be cut away as at 55-56 so as not to interfere with the free operation of the pawl 32 and the material cutting and holding mechanism, which latter will now be described.

Arranged adjacent the periphery of the member 24 and preferably so as to operate in the cut-away portion 55 of one of the sections 25, is a cutting tool designated generally bythe reference numeral 51 that is slidable in a suitable guideway 58 and this cutting tool has associated therewith opposed resilient members 59 which project for any desired distance beyond the cutting edge 60 of the ,tool.

Thecutting tool is reciprocated preferably from one of the shafts l9 through the medium of a cam 6| secured to the shaft for rotation therewith. A member 82 co-operates with the cam 6| through a member 61a and roller Gib and is pivotally connected as at 63 to the joint of a toggle comprising links 6465. The free end of the link 64 is pivotally connected as at 66 with a stationary part of the machine and the free end of thelink 65 is pivotally connected as at 61 to an arm 68, the latter being connected to a shaft 69 journaled in a suitable bearing 10.

To the shaft 69 is also connected an arm 1 land this arm in turn has pivotally connected at one end, as at 12, a link 13,.the other end of the link being pivotally connected as at 14 with the cutter member 51. Thus when the shaft I9 is rotated the cam 6| will, through the medium of the member 62, oscillate the shaft 59, thereby rocking the member II to cause a reciprocatory movement to be imparted to the cutter member 51.

The material 15 from which the blanks are formed is preferably fed in the form of a bar, strip or coil into a position to be severed into pieces of predetermined lengths by the cutter member 51, and an adjustable stop device 16 for varying the length of the pieces cut may be provided and is in a position that the end of the material being fed will abut the same.

A quill or sleeve 11 is suitably mounted, preferably in the guide 58, so that the forward edge thereof will co-operate with the cutter member 51 to sever the material.

The material passes between feed rollers 18-19, the roller 18 being preferably held against the material by means of a suitable spring 89, the tension ofwhich may be varied by an adjusting screw 3|.

The other feed roller 19 is adapted to be in termittently rotated and to that end there may be provided a ratchet 82' secured to the roller and with which ratchet a pawl 83 co-operates, the pawl being carried by an arm-34, and to the arm 94 is pivotally connected as at 85 an arm 86, to which latter is connected a roller 81 that in turn co-operates with a cam 88 secured to one of the shafts l9.

All of the parts above described operate in timed relation with respect to each other and when the slides H are in a predetermined position, and the material 75 is in a position to be cut, the cutter member 51 will sever the end of the material, but before the material is severed the resilient elements 59 will grip the end of the material and will continue to hold the severed portion of the material after it has been out, and while the cutter member is still advancing, until the severed portion has been placed in alinement with one of the dies 21. This severed portion will still be held in this position until one of the tools 23 engages the end of the same and starts to force it into the die. At this moment the cutter member 51 will be retracted and the resilient members 59 will release the severed portion, the cutter and the members 59 then moving back to their start ing positions.

The slides I 1 will then continue to move towards each other so that the co-operating tools on the opposite side of the material in the die will operate thereupon to perform their particular operation on the material.

The slides are then retracted and the member 24 advanced one step of advancing movement so as to position the partially formed'blank to be operated upon by the next pair of co -operating tools. At the same time the material IE will be given another step oi advancement and another portion will be severed and positioned so as to be forced into another one of the dies. I

This operation continues until all of the dies have received apiece of-the material and thereafter upo each operation of the machine, one nut. blank will be completed.

At a predetermined point adjacent the path of movement of the die carrying member 24 the nut blank will be forced from the die into a burnishing mechanism which latter may consist of a die 88' and during the passage of the nut therethrough it will be burnished and the necessity of tumbling or otherwise finishing the nut will be obviated.

Any suitable number of steps of operations may be provided and any suitable shape may be given to the blank.

In Figure 10 there is shown a series of steps of operation by means of which the nut blank may be formed, but it is to be understood that this may be varied; but as an illustration the various steps will now be referred to.

Step #1 after the material has been severed and positioned in the die consists in compressing the material designated by the reference numeral 89 between the co-operating tools 23 and'at the same time forcing spindles 99 to partially depress. or extrude the material to form the cavities 9|.

In the second step of the operation and when the-second pair of tools operate thereupon the spindles 92 will further extrude the material by deepening the cavities 9 i.

Thethird step of the operation is the same as l the two preceding steps with the, exception that the spindles 93 will further extrude the material and deepen the cavities 9i until there is a very thin wall 94 between the cavities,

In the fourth step of the operation the tool 23 is hollow to receive the spindle 95 which latter perforates the wall 94. At this stage and with this particular pair of tools one of the stripper members 30 co-operates. i

In the fifth step of the operation the tools 29 cooperate to shape the blank as at 96 and during this shaping operation it is quite possible that the opening 91 in the blank may be reduced in diameter. This condition is remedied by the co-operating tools 23 at the next step of the operation,

wherein the spindle 98 will pass through the opening 91 to restore it to its normal diameter.

In the seventh step of the operation the tools 23 may co-operate to further shape or perform some operation on the nut blank, and in the arcane 3 die 21 in the die carrying member 24, and into the burnishing mechanism 88'. 7 While the preferred number of steps has bee herein described, it is of course to be understood,

as before indicated, that the nut blank may be formed and completed in any desired number of steps of operation and it is of course tgbeimde-rstood that in the event that thEnn-finber should be varied, the remaining parts'of the mechanism must be adjusted to impart the desired extent of movement and also so that they will operate in timed relation with respect to each other.

While the preferred form of the invention has been herein shown and described, it is to be understood that various changes may be made in the details of construction and in the combination and arrangement of the several parts and in the mode of operation of the same, within the scope of the claims without departing from the spirit of this invention.

What is claimed as new is:

1. A nut making machine embodying opposed slides, acircular die carrying member disposed between said slides, channel members into which the peripheral edge of the said die carrying member projects whereby said die carrying member is supported by its periphery for free rotation, means disposed to one side of said member for feeding a strip of material, means operating to sever the materiaLthe last said means having co-operating therewith resilient means for holding and positioning the severed material in alinement with one of the dies carried by said member, co-operating tools carried by said slides and operating on opposite sides of the material in the die, and a source of power actuating the slides, the material feeding means and the means for severing and positioning the material.

2. A nut making machine embodying opposed slides, a circular die carrying member disposed between the slides, channel members into which Y the peripheral edge of said die carrying member projects whereby the said die carrying member is supported by its periphery for free rotation, means disposed beyond the periphery of said member for feeding a strip of material, a cutter for severing the material, spring members co-operating with the cutter for holding and positioning the severed by said member, co-operating tools carried by said slides and operating on' opposite sides of the material in the die, a source of power actuating the slides, the material feeding means and the means for severing and positioning the material, locking means co-operating with the periphery of said member, and means operating in timed relation with said slides and also co-operating with the periphery of said die carrying member for impart material in alinement with one of the dies carried ported by its periphery for free rotation, the axis thereof being horizontal, opposed slides between which said member is disposed, co-operating pairs of tools carried by the slides, said pairs of tools successively operating upon the material in the die, means to initially position and temporarily hold the material in alinement with one of the dies, means for imparting intermittent steps of advancing movement to said die carrying member, means operating to lock said member after each step of movement, means for controlling said locking means, and means individual to said slides, said material positioning and holding means and said die carrying member to actuate them.

4. In a nut making machine, a circular die carrying member, channel members into which the peripheral edge of said die carrying member projects whereby the die carrying member is supported by its periphery for free rotation, the axis thereof being horizontal, opposed slides between which said member is disposed, means for imparting intermittent steps of movement to said member, means for locking said member after each step of movement, means for controlling said locking means, means for feeding a strip of material in the directiton lengthwise of the axis of said member and beyond the periphery of the member, means for severing said strip into pieces of predetermined size, gripping means associated with the last said means for temporarily holding and positioning the severed material in alinement with one of the dies, a plurality of pairs of cooperating tools carried with the slide, said pairs operating successively upon the work in the die, and means for reciprocating the slides.

5. In a nut making machine a circular die carrying member, channel members into which the peripheral edge of said die carrying member is supported by its periphery for free rotation, a plurality of dies carried by said member, opposed slides between which said member is disposed, a plurality of tools carried by the slides, said tools arranged in co-operating pairs one of each pair carried by each slide, said pairs of tools successively operating upon the material in the dies, each pair of tools performing a step in the manufacture of the nut, a cutter, means for feeding the material to the cutter beyond the periphery of the die carrying member and in a direction lengthwise of the axis of said member to be severed by the cutter, means for positioning the cut material in alinement with a die and for temporarily holding the material, a source of power, means operatively connected to said source of power for reciprocating the slides, means for intermittently moving said member, means for actuating said positioning and holding means, and operative connections between said source of power and the last two recited means.-

6. In a nut making machine a circular die carrying member, channel members into which the peripheral edge of said die carrying member projects, whereby said die carrying member is supported by its periphery for free rotation, a plurality of dies carried by said member, opposed slides between which said member is disposed, a plurality of tools carried by the slides, said tools arranged in co-operating pairs one of each pair carried by each slide, said pairs of tools successively operating upon the material in the dies, each pair of tools performing a step in the manufacture of the nut, means for gripping the material and for positioning and temporarily holding the same with respect to and on one side of one of said dies, a source of power, means operatively connected to said source of power for reciprocating the slides, means for intermittently moving said member,

means for actuating said positioning and holding. means, operative connections between said source of power and the last two recited means, said member having a plurality of die receiving openings therethrough spaced equal distances from the axis of said rotatable member, dies adapted to be seated in said openings, and means for removably securing the dies in position.

'7. In a nut making machine, a die, means supporting the die, a reciprocable slide, a tool carried by the slide and operable upon the material in the die, means for feeding the material, means for severing the material into predetermined lengths, and means associated with the severing means for positioning the severed material with respect to the die and for temporarily holding the material in alinement with the die while it is being forced int the die by said tool, the said severing means embodying a reciprocable cutting element, and the said holding means embodying opposed resilient elements secured to and on opposite sides of the severing means, and between which elements the severed material is releasably gripped.

8. In a nut making machine a circular die carrying member, channel members into which the peripheral edge of said die carrying member projects, whereby said die carrying member is supported by its periphery for free rotation, opposed reciprocable slides between which said member is disposed, a plurality of pairs of cooperating tools carried by the slides," one tool of each pair being carried by each slide, means for positioning and temporarily holding the material in alinement with one of the dies to be moved into the die by one of said tools, means for intermittently advancing said member to position the material to be successively operated upon while in the die by the respective 'pairs of tools, and burnishing means adjacent said member, one of said tools operating upon'the nut blank to force it from the die and into the said burnishing means.

WILLIAM J. CARNEY. 

